Answer: D) the capacity of layers of metal ions to slide over the other Explanation:

Answer: C) 149.08 Explanation: The gram formula mass is nothing but molar mass.   Composition :   Symbol      Element       Atomic weight       Atoms          P         Phosphorus       30.973762               1       = 30.973         O         Oxygen             15.9994                  4       =  63.998         N         Nitrogen            14.0067                  3       =  42.020         H         Hydrogen          1.00794                  12      =  12.096     Total   =  30.973+63.998+42.020+12.096 = 149.087

Answer: C) is described generally, not using a formal definition Explanation: In geometry, we can define plane as a flat surface with no thickness. The surface extends with no ends. A plane does not have any edges even if we draw it on paper with edges, it does't mean it has edges.   Hence, A plane is an undefined term because it is described generally, not using a formal definition.

Answer: B) 1 Explanation: The product of a number and its reciprocal is always equals to 1.   For Example : Let the number be 4. Now, its reciprocal is 1/4 Hence, required product = 4 x 1/4 = 1.   Now, take the number as -15. Then its reciprocal is -1/15 Required product = -15 x -1/15 = 1.   Hence, the product of a number and its reciprocal is 1.

Answer: B) Siemens m2/equivalent Explanation: Equivalent conductance is defined as the conductance of an electrolyte solution containing one gram equivalent of the electrolyte. It is equal to the product of specific conductance (k) of the solution and the volume (V) of the solution that contains one gram equivalent of the electrolyte.    λ = k x V   Unit of spceific conductance k is Siemens / m. Volume of the solution V is m3 Now, required equivalent conductance unit is Siemens.m2/equivalent .

Its a Needle. Needle has an eye but can't see.

Answer: A) 99 Explanation: Given 2 is to 55 2 + 3 = 5  5 x 11 = 55 Similarly, 6 6 + 3 = 9 9 x 11 = 99   Hence, 2 is to 55 as 6 is to 99.

Answer: B) Giraffe Explanation: Giraffe has the highest blood pressure among animals.  This is due to the fact that there is a large pressure drop (~100 mmhg) as the blood is transported from the heart, up the neck, to the brain. This is about twice the normal blood pressure of humans (120/80 mmhg).